One of the most basic questions in astronomy is how far away something is. Now, a new catalog of objects will help scientists answer that question for tens of thousands of objects that are so far away they date back to the beginning of the universe.
One of the most basic questions in astronomy is how far away something is. Now, a new catalog of objects will help scientists answer that question for tens of thousands of objects that are so far away they date back to the beginning of the universe.